Question

A boy on a bicycle is resting at the top of a hill. Then, he rides his bicycle down the hill. Describe how the boy's potential and kinetic energy differ at the top, middle, and bottom of the hill.

Answer 1

At the top of the hill the boy has more potential energy. In the middle he's gaining kinetic energy but losing potential energy. At the bottom he has the most kinetic energy and no potential energy at all.